package cxy.service.impl;

import cxy.dao.StudentDao;
import cxy.entity.Student;
import cxy.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.List;

public class StudentServiceImpl implements StudentService {
    @Autowired
    private StudentDao studentDao;
    @Override
    public int add(Student student) {
        return 0;
    }

    @Override
    public int delete(Integer sid) {
        return 0;
    }

    @Override
    public int update(Student student) {
        return 0;
    }

    @Override
    public List<Student> queryAll() {
        return List.of();
    }

    @Override
    public Student queryById(Integer sid) {
        return null;
    }
}
